Title: Error with Office 365 Last modified: September 2, 2019 --- # Error with Office 365 * [teteia](https://wordpress.org/support/users/teteia/) * (@teteia) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/) * Hi, * I checked and I had everything worked until end of may. I think I didn’t change anything.. nowadays I receive this error: 5.7.3 Authentication unsuccessful [ AM3PR05CA0089.eurprd05.prod.outlook.com] * I checked password and username. Works fine, and I can login via Browser to this E-Mail Account. * Type: SMTP MAilertype: PostSMTP Outgoing Mail Server Hostname: smtp.office365. com Port: 587 Envelope-From Email Address: Same Email adress im login with. Security STARTTLS Authentication LOGIN * Username: xx PW: xx * Thanks forn the help! * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-with-office-365%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 15 replies - 1 through 15 (of 20 total) 1 [2](https://wordpress.org/support/topic/error-with-office-365/page/2/?output_format=md) [→](https://wordpress.org/support/topic/error-with-office-365/page/2/?output_format=md) * [yehudah](https://wordpress.org/support/users/yehudah/) * (@yehudah) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11890974) * Hi * Please paste the diagnostic test here. * Thread Starter [teteia](https://wordpress.org/support/users/teteia/) * (@teteia) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11890980) * Mailer: postsmtp HostName: dtmd.eu cURL Version: 7.45.0 OpenSSL Version: OpenSSL/ 1.0.2n OS: Linux bitnami-wordpress-abf8 4.15.0-1049-azure #54-Ubuntu SMP Mon Jun 24 20:59:24 UTC 2019 x86_64 PHP: Linux 7.0.27 C PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes WordPress: 5.2.2 de_DE UTF-8 WordPress Theme: Allegiant Pro Child– DTMD WordPress Plugins: Polylang, Gravity Forms, All-in-One WP Migration, Cookie Notice, CPO Companion, CPO Content Types, CPO Shortcodes, CPO Widgets, Disable Comments, Easy Table of Contents, Enable Media Replace, Gravity Forms Dynamics CRM Add-On, Modula, Modula PRO, Post SMTP, Page Builder by SiteOrigin, SiteOrigin Widgets Bundle, TC Team Members Pro, Use Google Libraries WordPress wp_mail Owner:/ opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder. php WordPress wp_mail Filter(s): wp_staticize_emoji_for_email Postman: 2.0.4 Postman Sender Domain (Envelope|Message): dtmd.eu | dtmd.eu Postman Prevent Message Sender Override (Email|Name): Yes | Yes Postman Active Transport: SMTP (smtp: tls:login://smtp.office365.com:587) Postman Active Transport Status (Ready|Connected): Yes | Yes Postman Deliveries (Success|Fail): 255 | 491 Postman Email Log (Enabled |Limit|Transcript Size): Yes | 500 | 128 * [yehudah](https://wordpress.org/support/users/yehudah/) * (@yehudah) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11891003) * Everything looks great, did you did anything on the period it stopped working? * Changing web hosting? Installed a plugin? * Thread Starter [teteia](https://wordpress.org/support/users/teteia/) * (@teteia) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11891009) * Not that I know about, maybe change some settings in Exchange, but I allready check them and can’t find an error. Same webhost, also I deactivate all Plugins to check if there is any problem. * it’s very strange to me… * [yehudah](https://wordpress.org/support/users/yehudah/) * (@yehudah) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11891372) * Any chance your password has expired? * Thread Starter [teteia](https://wordpress.org/support/users/teteia/) * (@teteia) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11891420) * no, expiration is disabled for the moment. * [yehudah](https://wordpress.org/support/users/yehudah/) * (@yehudah) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11891443) * Please re-enter your credentials. * Thread Starter [teteia](https://wordpress.org/support/users/teteia/) * (@teteia) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11891458) * still not working, just double check again everthing * [yehudah](https://wordpress.org/support/users/yehudah/) * (@yehudah) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11891468) * Can you contact me here: [https://postmansmtp.com/contact](https://postmansmtp.com/contact) * Select ‘other’ * Thread Starter [teteia](https://wordpress.org/support/users/teteia/) * (@teteia) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11892073) * did it 🙂 * [marvelcreative](https://wordpress.org/support/users/marvelcreative/) * (@marvelcreative) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11897888) * Hi, did you get this resolved? I am trying to set up the plugin for the first time, using Office 365 as well, and I get the exact same issue. If you found a solution could you post it here please? Thanks * [yehudah](https://wordpress.org/support/users/yehudah/) * (@yehudah) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11897899) * [@marvelcreative](https://wordpress.org/support/users/marvelcreative/) You are welcomed to contact me. * Thread Starter [teteia](https://wordpress.org/support/users/teteia/) * (@teteia) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11897903) * [@yehudah](https://wordpress.org/support/users/yehudah/) did you receive my Contact? * [yehudah](https://wordpress.org/support/users/yehudah/) * (@yehudah) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11897909) * [@teteia](https://wordpress.org/support/users/teteia/) * I have replied, I was wondering why you not replying. * Thread Starter [teteia](https://wordpress.org/support/users/teteia/) * (@teteia) * [6 years, 9 months ago](https://wordpress.org/support/topic/error-with-office-365/#post-11897914) * didn’t receive any ? :O just double check my spam folder Viewing 15 replies - 1 through 15 (of 20 total) 1 [2](https://wordpress.org/support/topic/error-with-office-365/page/2/?output_format=md) [→](https://wordpress.org/support/topic/error-with-office-365/page/2/?output_format=md) The topic ‘Error with Office 365’ is closed to new replies. * ![](https://ps.w.org/post-smtp/assets/icon-128x128.gif?rev=3209655) * [Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App](https://wordpress.org/plugins/post-smtp/) * [Frequently Asked Questions](https://wordpress.org/plugins/post-smtp/#faq) * [Support Threads](https://wordpress.org/support/plugin/post-smtp/) * [Active Topics](https://wordpress.org/support/plugin/post-smtp/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/post-smtp/unresolved/) * [Reviews](https://wordpress.org/support/plugin/post-smtp/reviews/) * 20 replies * 1 participant * Last reply from: [yehudah](https://wordpress.org/support/users/yehudah/) * Last activity: [6 years, 7 months ago](https://wordpress.org/support/topic/error-with-office-365/page/2/#post-12169870) * Status: not resolved